uppose you pour 0.350 kg of 20.0°C water into a 0.900 kg aluminum pan off the stove with a temperature of 165°C. Assume that the pan is placed on an insulated pad. What would be the final temperature (in °C) of the pan and water if 0.0300 kg of the water evaporated immediately, leaving the remainder to come to a common temperature with the pan?
uppose you pour 0.350 kg of 20.0°C water into a 0.900 kg aluminum pan off the...
Problem 13: Suppose you place 0.255 kg of 20.5°C water in a 0.45 kg aluminum pan with a temperature of 144.5°C, and 0.012 kg of the water evaporates immediately, leaving the remainder to come to a common temperature with the pan. What would be the final temperature, in degrees Celsius, of the pan and water? The heat of vaporization of water is Lv = 2256 kJ/kg. You may neglect the effects of the surroundings and the heat required to raise...
A combination of 0.250 kg of water at 20.0°C, 0.400 kg of aluminum at 26.0°C, and 0.100 kg of copper at 100°C is mixed in an insulated container and allowed to come to thermal equilibrium. Ignore any energy transfer to or from the container. What is the final temperature of the mixture?
(9%) Problem 11: Suppose you place 0.285 kg of 21.5°C water in a 0.55 kg aluminum pan with a temperature of 155°C, and 0.0075 kg of the water evaporates immediately, leaving the remainder to come to a common temperature with the pan. 0.20 Date: 131/2020 11:39:00 PM Substances Specific heat (c) Solids J/kg C kcal/kg. Aluminum 900 0.215 Concrete 840 Copper 387 0.0924 Granite 840 0.20 Ice (average) 2090 0.50 Liquids Water 4186 1.000 Gases Steam (100°C) 1520 (2020) 0.363(0.482)...
A 0.0400-kg ice cube at −30.0°C is placed in 0.350 kg of 35.0°C water in a very well-insulated container. What is the final temperature in degrees Celsius?
A 0.55 kg aluminum pan, c a l = 900 , on a stove is used to heat 0.4 liters of water from 21 ºC to 92 ºC. (a) How much heat is required? Q total = unit What percentage of the heat is used to raise the temperature of (b) the pan % and (c) the water? %
A 0.15 kg ice is placed into an aluminum cup with 0.3 kg water in it. The initial temperature of cup is 60°C and the mass of the aluminum cup is 0.2 kg. What is the final temperature of the water when the system come to equilibrium. See the equation [3] in the manual. Here use cc=900 J/kg°C, Cw=4186 J/kg°C and Ci=2090 J/kg°C. And L=333000 J/kg The answer keep one digit under decimal point. (For example 10.3)
Suppose 0.385 kg of water initially at 39.5°C is poured into a 0.300 kg glass beaker having a temperature of 25.0°C. A 0.500 kg block of aluminum at 37.0°C is placed in the water, and the system insulated. Calculate the final equilibrium temperature of the system. °C
Constants A 3.0-kg piece of aluminum at 28.4 °C is placed in 1.0 kg of water in a Styrofoam container at room temperature (20.0 °C). Part A Estimate the net change in entropy of the system. Express your answer to two significant figures and include the appropriate units. uÅ ? a xa Хь X•10n x AS = Value Units O The unit you entered is not recognized. Review a list of acceptable units. No credit lost. Try again.
The following questions are from an experiment titled Friedel-Crafts Alkylation for Organic Chemistry II Lab. There are pictures attached of the lab manual. 2) Is this method a good route for the preparation of p-sec-butyltoulene? Give reasons for your answer. 3) Why do you use a large excess of toulene. What are its functions? 4) What is the purpose for adding the hydrochloric acid to the water in the separatory funnel in step 5? Hint: If no acid is added,...